Open your CS Professional Suite applications and you will receive a prompt to verify your identity (via a single question) on your mobile device.

Notes

By default, multi-factor authentication is an optional feature that individual users can opt into by enabling it for their own accounts. If desired, firm administrators can enable a setting that requires all staff members to log in with multi-factor authentication. For more information on requiring multi-factor authentication firm wide, see Setting up multi-factor authentication for all staff.